Upstream Browser Actions changes.

This change upstreams the following changes (git log can be found at
[1]):

3dab0ad 🛃 Fix customtabs tests. by Peter E Conn...
5f4df5c Change javadoc and function name to show...
0a9bac1 Change xml/filepaths.xml to prevent conf...
54788ba Add "import android.support.customtabs.R...
7884a65 Add predefined items to Browser Actions ...
5eeb560 Fix: "calback" to "callback" in JavaDoc....
9cfda16 Fix IndexOutOfBoundsException when urls ...
911f9f6 Browser Actions fallback dialog could re...
0f51f5c Clean up images which have not been shar...
11160d7 Sync Browser Actions changes on Android ...

[1]: https://chromium.googlesource.com/custom-tabs-client.git/+log

Test: Instrumentation tests still pass, as do the new ones brought over.
Change-Id: I1cd644ff2295b6ad692fdc1d6bf889a8a1b3da24
diff --git a/browser/OWNERS b/browser/OWNERS
index a0bf18a..b6d0e07 100644
--- a/browser/OWNERS
+++ b/browser/OWNERS
@@ -1,2 +1,2 @@
 [email protected]
[email protected]
\ No newline at end of file
[email protected]